Delete duplicate files from one of two directory structures

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Old 10-15-2009
Delete duplicate files from one of two directory structures

Hello everyone,

I have been struggling to clean up a back-up mess I created when manually duplicating a directory structure and then working in both of them..
The structures now are significantly different and contain in the order of 15 k files of which most are duplicates.
Now I am trying to merge those dirs and had a look at FSlint, Meld, diff, and fdupes.
While all of those are good tools, I have not found them able to do what I need so I am looking for a way to reduce manual work to a minimum by deleting duplicates from the second dir structure. I will have to sort/merge the remaining files by hand.
The closest to doing that is with fslint's findup ( :: Tidy up your filesystem with FSlint) which returns a list of duplicate files separated by empty lines.
Since the duplicates listed may also be within a single one of the directory structures, I cannot be sure to delete files that are also present in path 1.
I can't make myself really clear, I'm afraid, so here's an example:

dir2/somepath/dup1 <-- delete
dir2/path/to/dup1 <-- delete

One attempt may be to first delete duplicates from dir2 and afterwards compare with dir1.

Any help appreciated!
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GIT-MERGETOOL(1)                                                    Git Manual                                                    GIT-MERGETOOL(1)

git-mergetool - Run merge conflict resolution tools to resolve merge conflicts SYNOPSIS
git mergetool [--tool=<tool>] [-y | --[no-]prompt] [<file>...] DESCRIPTION
Use git mergetool to run one of several merge utilities to resolve merge conflicts. It is typically run after git merge. If one or more <file> parameters are given, the merge tool program will be run to resolve differences on each file (skipping those without conflicts). Specifying a directory will include all unresolved files in that path. If no <file> names are specified, git mergetool will run the merge tool program on every file with merge conflicts. OPTIONS
-t <tool>, --tool=<tool> Use the merge resolution program specified by <tool>. Valid values include emerge, gvimdiff, kdiff3, meld, vimdiff, and tortoisemerge. Run git mergetool --tool-help for the list of valid <tool> settings. If a merge resolution program is not specified, git mergetool will use the configuration variable merge.tool. If the configuration variable merge.tool is not set, git mergetool will pick a suitable default. You can explicitly provide a full path to the tool by setting the configuration variable mergetool.<tool>.path. For example, you can configure the absolute path to kdiff3 by setting mergetool.kdiff3.path. Otherwise, git mergetool assumes the tool is available in PATH. Instead of running one of the known merge tool programs, git mergetool can be customized to run an alternative program by specifying the command line to invoke in a configuration variable mergetool.<tool>.cmd. When git mergetool is invoked with this tool (either through the -t or --tool option or the merge.tool configuration variable) the configured command line will be invoked with $BASE set to the name of a temporary file containing the common base for the merge, if available; $LOCAL set to the name of a temporary file containing the contents of the file on the current branch; $REMOTE set to the name of a temporary file containing the contents of the file to be merged, and $MERGED set to the name of the file to which the merge tool should write the result of the merge resolution. If the custom merge tool correctly indicates the success of a merge resolution with its exit code, then the configuration variable mergetool.<tool>.trustExitCode can be set to true. Otherwise, git mergetool will prompt the user to indicate the success of the resolution after the custom tool has exited. --tool-help Print a list of merge tools that may be used with --tool. -y, --no-prompt Don't prompt before each invocation of the merge resolution program. This is the default if the merge resolution program is explicitly specified with the --tool option or with the merge.tool configuration variable. --prompt Prompt before each invocation of the merge resolution program to give the user a chance to skip the path. -O<orderfile> Process files in the order specified in the <orderfile>, which has one shell glob pattern per line. This overrides the diff.orderFile configuration variable (see git-config(1)). To cancel diff.orderFile, use -O/dev/null. TEMPORARY FILES
git mergetool creates *.orig backup files while resolving merges. These are safe to remove once a file has been merged and its git mergetool session has completed. Setting the mergetool.keepBackup configuration variable to false causes git mergetool to automatically remove the backup as files are successfully merged. GIT
Part of the git(1) suite Git 2.17.1 10/05/2018 GIT-MERGETOOL(1)

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